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In order to accelerate construction progress, reserved groove construction method is used to construct the horizontal beams which join the trash rack piers and dam body. A decrease of connection stiffness at the junctions may be caused, and the seismic behavior of trash rack concrete frame will be affected. In accordance with a certain powerhouse dam section of RCC gravity dam, the effects of weakening...
In order to analyse the free vibration characteristics of hydropower house, finite element method (FEM) is used in the modal analysis. The main emphasis is placed on the problem of influencing factors of the modal analysis for hydropower house. The influencing factors include calculation model range, boundary condition and water in spiral case. Two practical cases are given. The study indicates that...
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